3COM CORPORATION
================

   PASSWORD 300 MODEM

   Modem Type               Data (synchronous/asynchronous)       
   Maximum Data Rate        300bps                                
   Data Bus                 External                              
   Data Modulation Protocol Bell 103A/212A                        

<gopher://bitreich.org/I/th99/t/0-9/54137-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Purpose     | Location |      Purpose       | Location |
   |-----------------+----------+--------------------+----------|
   | Line in         |   CN1    | RS-232/422         |   CN3    |
   |-----------------+----------+--------------------+----------|
   | DC power        |   CN2    | Power switch       |   SW2    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      CHARACTER LENGTH                      |
   |------------------------------------------------------------|
   | Setting                       |             J2             |
   |-------------------------------+----------------------------|
   |>> 10-bit                      |            Off             |
   |-------------------------------+----------------------------|
   | 11-bit                        |             On             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                TRANSMIT AND RECEIVE SIGNAL                 |
   |------------------------------------------------------------|
   | Setting            |        J3         |        J4         |
   |--------------------+-------------------+-------------------|
   |>> Normal pin       | Pins 1 & 2 closed | Pins 1 & 2 closed |
   | assignment         |                   |                   |
   |--------------------+-------------------+-------------------|
   | Tx/Rx pins         | Pins 2 & 3 closed | Pins 2 & 3 closed |
   | reversed           |                   |                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        AUTO ANSWER                         |
   |------------------------------------------------------------|
   | Setting                             |        SW1/1         |
   |-------------------------------------+----------------------|
   |>> Modem answers on first ring       |         Off          |
   |-------------------------------------+----------------------|
   | Modem does not answer on first ring |          On          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       CARRIER DETECT                       |
   |------------------------------------------------------------|
   | Setting                       |           SW1/2            |
   |-------------------------------+----------------------------|
   |>> CD normal                   |            Off             |
   |-------------------------------+----------------------------|
   | CD forced high                |             On             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         DTR SIGNAL                         |
   |------------------------------------------------------------|
   | Setting                       |           SW1/4            |
   |-------------------------------+----------------------------|
   |>> DTR normal                  |            Off             |
   |-------------------------------+----------------------------|
   | DTR forced high               |             On             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                FACTORY CONFIGURED SETTINGS                 |
   |------------------------------------------------------------|
   |            Jumper            |           Setting           |
   |------------------------------+-----------------------------|
   |            SW1/3             |             N/A             |
   |------------------------------+-----------------------------|
   |              J1              |             N/A             |
   +------------------------------------------------------------+